From 9f883208c2a17f1be9511aece65fa60861385124 Mon Sep 17 00:00:00 2001
From: "mkaply%us.ibm.com" <mkaply%us.ibm.com>
Date: Thu, 19 Oct 2000 22:13:52 +0000
Subject: [PATCH] #55550 r=mkaply, a=blizzard Code from jjones to check window
 before deferencing it

---
 widget/src/os2/nsWindow.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/widget/src/os2/nsWindow.cpp b/widget/src/os2/nsWindow.cpp
index ffbbdb7e1e14..df8f3f81d092 100644
--- a/widget/src/os2/nsWindow.cpp
+++ b/widget/src/os2/nsWindow.cpp
@@ -678,7 +678,7 @@ MRESULT EXPENTRY fnwpNSWindow( HWND hwnd, ULONG msg, MPARAM mp1, MPARAM mp2)
    {
       BOOL bPreHandling = g_bHandlingMouseClick;
       if( PR_FALSE == wnd->ProcessMessage( msg, mp1, mp2, mRC) &&
-          wnd->GetPrevWP())
+          WinIsWindow( (HAB)0, hwnd) && wnd->GetPrevWP())
       {
          mRC = (wnd->GetPrevWP())( hwnd, msg, mp1, mp2);